Being that we are a food production facility, the ear plugs we use are not only metal detectable, but have the highest NRR (Noise Reduction Rating) of any available. They are comparable to most ear muffs. I personally use ear muffs but some folks don't like them for various reasons. I had brought several pair of ear muffs along just in case, but the others decided to use the ear plugs. Since they were trained at the plant on how to properly install them, I had no worries about that issue.I taught my wife and children and grandchildren how to safely shoot. As a child I didn't have that opportunity but I did learn at Cub Scout camp. I wish that my parents would have taught me. Now in my "golden" days those I taught are all better shots than I am. My only critique of the op was the use of ear plugs from his shop, most of them I find to be inadequate and I use ear muffs for all new shooters. The loud noise of a gun shot can really frighten a new shooter and I want maximum ear protection for them. Otherwise you did great and I applaud you. Skills we learn from our parents are wonderful unless your parents have no gun skills (mine had none).